Genome Organization Fashions an Immune-evading Parasite CoatOctober 24, 2018One might describe Trypanosoma brucei as a moderately fashionable parasite, as it changes its outer coat faster than models can strut their stuff down the exclusive catwalks in Paris or Milan! Other than making this troublesome unicellular protozoan look very sharp, its ever-changing coat helps it to keep out of reach of the host immune system […]
CRISPR-Cas9 Mediated Deletion of Imprinted Genes Enables Same-Sex Reproduction in MiceOctober 23, 2018Having the birds and bees talk can be a little awkward for some parents, but at least the rules were straight forward. Well one of those basic rules—that you need a sperm and an egg to make an embryo—just isn’t true anymore. A seminal discovery in mammalian genetics was that fertilization in mice required maternal […]
Colossal New Roadmap Study Provides Single-Chromosome View on Sequence-Dependent Allele-Specific MethylationOctober 7, 2018Colossal, gigantic, mammoth, immense; none of these adjectives appropriately describes the amount of research carried out or curated by the National Institute of Health Roadmap Epigenomics Mapping Consortium, whose final goal is to produce a public resource of human epigenomic data to drive forward basic biology and disease-oriented research. As part of this research, scientists […]
Not Just Monkey Business: circRNAs are Dynamic in the Aging Non-Human Primate BrainSeptember 28, 2018While we tend to grow out of monkey business and running in circles as we grow older, exciting new profiles of brain circular RNA (circRNA) dynamics during normal aging have emerged thanks to these two youthful tactics. This insightful research into non-human primates comes from the groups of Jiali Li (University of the Chinese Academy […]
Egg-ceptional Role of Retrotransposon Transcription in Depositing DNA MethylationSeptember 25, 2018What do the mammalian genome and an old storage unit have in common? They’re both full of so-called junk. But unlike your aunt’s box of glass figurines, the junk in the human genome has turned out to have a lot of value. Most the “junk” in the human genome arose from retrotransposons. Long terminal repeat […]
Recycling: Keeping the Planet Green and the Histone Modification Landscape Pristine!September 22, 2018Recycling represents one of the most important strategies to keep the planet clean and green for generations to come. Used paper, metal, and plastic and other assorted detritus generally encounter a second use, but can we recycle the histone proteins that help to package our DNA and maintain cell-type-specific transcriptional programs? A lean, clean, and […]
Forget a Moment on the Lips, DNA Methylation Disruptions from a Night Without Sleep Could Mean ‘Forever’ on the HipsSeptember 20, 2018While staring at the alarm clock isn’ta great way to catch a healthy night’s sleep, the lull of our circadian rhythm most certainly is. The circadian clock keeps our cells and their epigenomes in shape by maintaining synchrony with the day, and now new findings from the lab of Christian Benedict at Uppsala University (Sweden) […]
Chromatin Domain Boundary Issues Turn Short Tandem Repeats PathogenicSeptember 11, 2018Boundary issues between countries can start wars, while boundary issues between people cause personal space problems; but can boundary issues between repetitive loci lead to the development of human disorders? The pathogenesis of the disorders in question, which include fragile X syndrome (FXS), Huntington’s disease, amyotrophic lateral sclerosis, and Friedreich’s ataxia, involves the unstable expansion […]
To Bee or Not to Bee Queen: The Role of Chromatin Structure in Honey Bee Caste DeterminationSeptember 2, 2018We’d all like to be queen for a day, but most of us weren’t born into royalty. In the honey bee world, your queen status is also determined pretty early on—only 96 hours after hatching. New research has uncovered more epigenetic modifications that determine who gets to be queen bee. And who better to study […]
Neurons Make the Most of m6A mRNA MethylationAugust 29, 2018Move over DNA methylation, take a seat histone modification, it’s time to make room for RNA methylation. When you think of the importance of epigenetics to brain function and cognition, you probably think of well characterized changes DNA methylation, histone marks, and ncRNA. Well you better make some room in your own neural networks, because […]